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-rw-r--r--fs/btrfs/compression.c2
-rw-r--r--fs/btrfs/extent_io.c6
-rw-r--r--fs/btrfs/extent_io.h2
-rw-r--r--fs/btrfs/inode.c13
-rw-r--r--fs/btrfs/scrub.c4
-rw-r--r--fs/btrfs/volumes.c91
6 files changed, 17 insertions, 101 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index e7f8ee5d48a4..7f11ef559be6 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -606,7 +606,7 @@ void btrfs_submit_compressed_read(struct btrfs_bio *bbio)
free_extent_map(em);
cb->nr_folios = DIV_ROUND_UP(compressed_len, PAGE_SIZE);
- cb->compressed_folios = kcalloc(cb->nr_folios, sizeof(struct page *), GFP_NOFS);
+ cb->compressed_folios = kcalloc(cb->nr_folios, sizeof(struct folio *), GFP_NOFS);
if (!cb->compressed_folios) {
ret = BLK_STS_RESOURCE;
goto out_free_bio;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 197f5e51c474..13bdd60da3c7 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2047,7 +2047,7 @@ static int submit_eb_subpage(struct folio *folio, struct writeback_control *wbc)
subpage->bitmaps)) {
spin_unlock_irqrestore(&subpage->lock, flags);
spin_unlock(&folio->mapping->i_private_lock);
- bit_start++;
+ bit_start += sectors_per_node;
continue;
}
@@ -3508,8 +3508,8 @@ static void btree_clear_folio_dirty_tag(struct folio *folio)
ASSERT(folio_test_locked(folio));
xa_lock_irq(&folio->mapping->i_pages);
if (!folio_test_dirty(folio))
- __xa_clear_mark(&folio->mapping->i_pages,
- folio_index(folio), PAGECACHE_TAG_DIRTY);
+ __xa_clear_mark(&folio->mapping->i_pages, folio->index,
+ PAGECACHE_TAG_DIRTY);
xa_unlock_irq(&folio->mapping->i_pages);
}
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 2e261892c7bc..f5b28b5c4908 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -298,6 +298,8 @@ static inline int __pure num_extent_pages(const struct extent_buffer *eb)
*/
static inline int __pure num_extent_folios(const struct extent_buffer *eb)
{
+ if (!eb->folios[0])
+ return 0;
if (folio_order(eb->folios[0]))
return 1;
return num_extent_pages(eb);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index cc67d1a2d611..bdafe4d4c4a5 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2129,12 +2129,13 @@ next_slot:
/*
* If the found extent starts after requested offset, then
- * adjust extent_end to be right before this extent begins
+ * adjust cur_offset to be right before this extent begins.
*/
if (found_key.offset > cur_offset) {
- extent_end = found_key.offset;
- extent_type = 0;
- goto must_cow;
+ if (cow_start == (u64)-1)
+ cow_start = cur_offset;
+ cur_offset = found_key.offset;
+ goto next_slot;
}
/*
@@ -5681,8 +5682,10 @@ struct btrfs_inode *btrfs_iget(u64 ino, struct btrfs_root *root)
return inode;
path = btrfs_alloc_path();
- if (!path)
+ if (!path) {
+ iget_failed(&inode->vfs_inode);
return ERR_PTR(-ENOMEM);
+ }
ret = btrfs_read_locked_inode(inode, path);
btrfs_free_path(path);
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 2c5edcee9450..c3b2e29e3e01 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1541,8 +1541,8 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg,
u64 extent_gen;
int ret;
- if (unlikely(!extent_root)) {
- btrfs_err(fs_info, "no valid extent root for scrub");
+ if (unlikely(!extent_root || !csum_root)) {
+ btrfs_err(fs_info, "no valid extent or csum root for scrub");
return -EUCLEAN;
}
memset(stripe->sectors, 0, sizeof(struct scrub_sector_verification) *
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index c8c21c55be53..8e6b6fed7429 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -733,82 +733,6 @@ const u8 *btrfs_sb_fsid_ptr(const struct btrfs_super_block *sb)
return has_metadata_uuid ? sb->metadata_uuid : sb->fsid;
}
-/*
- * We can have very weird soft links passed in.
- * One example is "/proc/self/fd/<fd>", which can be a soft link to
- * a block device.
- *
- * But it's never a good idea to use those weird names.
- * Here we check if the path (not following symlinks) is a good one inside
- * "/dev/".
- */
-static bool is_good_dev_path(const char *dev_path)
-{
- struct path path = { .mnt = NULL, .dentry = NULL };
- char *path_buf = NULL;
- char *resolved_path;
- bool is_good = false;
- int ret;
-
- if (!dev_path)
- goto out;
-
- path_buf = kmalloc(PATH_MAX, GFP_KERNEL);
- if (!path_buf)
- goto out;
-
- /*
- * Do not follow soft link, just check if the original path is inside
- * "/dev/".
- */
- ret = kern_path(dev_path, 0, &path);
- if (ret)
- goto out;
- resolved_path = d_path(&path, path_buf, PATH_MAX);
- if (IS_ERR(resolved_path))
- goto out;
- if (strncmp(resolved_path, "/dev/", strlen("/dev/")))
- goto out;
- is_good = true;
-out:
- kfree(path_buf);
- path_put(&path);
- return is_good;
-}
-
-static int get_canonical_dev_path(const char *dev_path, char *canonical)
-{
- struct path path = { .mnt = NULL, .dentry = NULL };
- char *path_buf = NULL;
- char *resolved_path;
- int ret;
-
- if (!dev_path) {
- ret = -EINVAL;
- goto out;
- }
-
- path_buf = kmalloc(PATH_MAX, GFP_KERNEL);
- if (!path_buf) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = kern_path(dev_path, LOOKUP_FOLLOW, &path);
- if (ret)
- goto out;
- resolved_path = d_path(&path, path_buf, PATH_MAX);
- if (IS_ERR(resolved_path)) {
- ret = PTR_ERR(resolved_path);
- goto out;
- }
- ret = strscpy(canonical, resolved_path, PATH_MAX);
-out:
- kfree(path_buf);
- path_put(&path);
- return ret;
-}
-
static bool is_same_device(struct btrfs_device *device, const char *new_path)
{
struct path old = { .mnt = NULL, .dentry = NULL };
@@ -1513,23 +1437,12 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags,
bool new_device_added = false;
struct btrfs_device *device = NULL;
struct file *bdev_file;
- char *canonical_path = NULL;
u64 bytenr;
dev_t devt;
int ret;
lockdep_assert_held(&uuid_mutex);
- if (!is_good_dev_path(path)) {
- canonical_path = kmalloc(PATH_MAX, GFP_KERNEL);
- if (canonical_path) {
- ret = get_canonical_dev_path(path, canonical_path);
- if (ret < 0) {
- kfree(canonical_path);
- canonical_path = NULL;
- }
- }
- }
/*
* Avoid an exclusive open here, as the systemd-udev may initiate the
* device scan which may race with the user's mount or mkfs command,
@@ -1574,8 +1487,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags,
goto free_disk_super;
}
- device = device_list_add(canonical_path ? : path, disk_super,
- &new_device_added);
+ device = device_list_add(path, disk_super, &new_device_added);
if (!IS_ERR(device) && new_device_added)
btrfs_free_stale_devices(device->devt, device);
@@ -1584,7 +1496,6 @@ free_disk_super:
error_bdev_put:
fput(bdev_file);
- kfree(canonical_path);
return device;
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-05-07 11:38:08 +0000